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onsemi FAN7688SJXRoHS

Manufacturer
onsemi
MPN
FAN7688SJX
LCSC Part #
C604981
Packaging
SOP-16-5.4mm
Customer #
Key Attributes
FAN7688 Advanced Secondary-Side LLC Resonant Converter Controller
Datasheetpdf icononsemi FAN7688SJX
In-Stock: 1,939
1,939 In stock, ships now
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QtyUnit PriceTotal Amount
1+$ 1.818$ 1.7453$ 1.75
10+$ 1.5381$ 1.4766$ 14.77
30+$ 1.3623$ 1.3079$ 39.24
100+$ 1.1833$ 1.1360$ 113.60
500+$ 1.1035$ 1.0594$ 529.70
1,000+$ 1.0677$ 1.0250$ 1025.00
Standard Packaging2000/Full Reel
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Products Specifications

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TypeDescription
CategoryIntegrated Circuits (ICs)/Power Management (PMIC)/Power Supply Controllers, Monitors
Manufactureronsemi
PackagingSOP-16-5.4mm
Frequency - Switching690kHz
FeaturesAdaptive synchronous rectification control;Programmable dead-time;Light load efficient mode;Abnormal state protection;Multi-mode compatible control
Quiescent Current2.8mA
Operating Temperature-40℃~+125℃
Operating Voltage0V~18V
Peak Output Current(Sink)140mA
Peak Output Current(Source)150mA
Turn-Off Delay65ns
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Additional Information

TypeDetails
Minimum1
Multiple1
Standard Packaging2000
Sales UnitPiece

Introduction

AI Translation

FAN7688 is an advanced pulse frequency modulation (PFM) controller for LLC resonant controllers with synchronous rectification (SR), delivering best-in-class efficiency for isolated DC/DC converters. Its current-mode control technology is based on charge control, where a triangular waveform from the oscillator combined with integrated switch current information determines the switching frequency. This provides an improved power stage control-to-output transfer function, simplifying feedback loop design while enabling true input power limiting. Closed-loop soft-start prevents error amplifier saturation and allows monotonic output voltage rise regardless of load conditions. Dual-edge tracking adaptive dead-time control minimizes body diode conduction time, thereby maximizing efficiency.

Features

AI Translation
  • Secondary-side PFM controller for LLC resonant converters with synchronous rectification control
  • Charge current control for improved transient response and simplified feedback loop design
  • Adaptive SR control with dual-edge tracking
  • Closed-loop soft-start for monotonically rising output
  • Wide operating frequency range (39 kHz~690 kHz)
  • Green-mode features for improved light-load efficiency
  • Symmetric PWM control for switching frequency limiting and reduced switching losses at light load
  • SR disabled under light-load conditions
  • Auto-restart protection
  • Overcurrent protection (OCP)
  • Output short-circuit protection (OSP)
  • Non-zero voltage switching prevention (NZS) via compensated turn-off (frequency shift)
  • Power limiting via compensated cutback (frequency shift)
  • Overload protection (OLP) with adjustable shutdown delay time
  • Over-temperature protection (OTP)
  • Programmable dead time for primary-side switches and secondary-side SRs
  • VDD undervoltage lockout (UVLO)
  • Wide operating temperature range: -40°C to +125°C

Applications

AI Translation
  • Desktop ATX, desktop-derived server, blade server, and telecom power supplies
  • Smart 100 W - 2 kW+ off-line power supplies
  • High-efficiency isolated DC-DC converters
  • Large-screen display power supplies
  • Industrial power supplies